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S^(2-) and SO(3)^(2-) can be distinguish...

`S^(2-)` and `SO_(3)^(2-)` can be distinguished by using:

A

`(CH_(3)COO)_(2)Pb`

B

`Na_(2)[Fe(CN)_(5)NO]`

C

Both (a) and (b)

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
`S^(2-) + (CH_(3)COO)_(2)Pb to underset("black ppt.")(PbSdarr) + 2CH_(3)COO^(-)`
`S^(2-) + Na_(2)[Fe(CN)_(5)NO] to [Fe underset("violet ppt")(CN)_(5)NOS]^(4+) + 2Na^(+)`
Hence, they are distinguished by both the reagents as only `S^(2-)` gives precipitate with these reagents.
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